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A131793 as a simple table

na(n)
11
23
35
42
54
66
77
89
911
108
1110
1212
1313
1415
1517
1614
1716
1818
1919
2021
2123
2220
2322
2424
2525
2627
2729
2826
2928
3030
3131
3233
3335
3432
3534
3636
3737
3839
3941
4038
4140
4242
4343
4445
4547
4644
4746
4848
4949
5051
5153
5250
5352
5454
5555
5657
5759
5856
5958
6060
6161
6263
6365
6462
6564
6666
6767
6869
6971
7068
7170
7272

[1,3,5,2,4,6,7,9,11,8,10,12,13,15,17,14,16,18,19,
 21,23,20,22,24,25,27,29,26,28,30,31,33,35,32,34,
 36,37,39,41,38,40,42,43,45,47,44,46,48,49,51,53,
 50,52,54,55,57,59,56,58,60,61,63,65,62,64,66,67,
 69,71,68,70,72]